// Copyright  2004-2008 Backplane Ltd.
//
// This file is part of Ubiquity formsPlayer
//
// Ubiquity formsPlayer is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3 of the License, or (at your
// option) any later version.
//
// Ubiquity formsPlayer is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License
// along with Ubiquity formsPlayer If not, see <http://www.gnu.org/licenses/>.
//	
//
//   Purpose: implementation of CSingleNodeBindingOnDemand.
//   $Id$
#include "stdafx.h"
#include "singlenodebindingondemand.h"
#include "vertex.h"
#include "model.h"
CSingleNodeBindingOnDemand::CSingleNodeBindingOnDemand(CImplModel * pModel,BSTR bsXPathExpression)
:m_pModel(pModel)
,m_sExpression(bsXPathExpression)
{
}

CSingleNodeBindingOnDemand::~CSingleNodeBindingOnDemand(void)
{
}

HRESULT CSingleNodeBindingOnDemand::GetNode(IXMLDOMNode * pContext,IXMLDOMNode ** pRetval)
{
	HRESULT hr;
	if(!pContext)
	{
		m_pModel->GetDefaultEvaluationContext(&pContext);
	}
	if(m_pModel && pContext)
	{
		hr = m_pModel->getInstanceNode(m_sExpression,pContext,false,pRetval);
	}
	else
		hr = E_PENDING;
	return hr;
}
